(Answering this as an economics professor).

First, good job on working on your pre-calc and algebra. Algebra is at the core of being able to do useful work in spreadsheets or understanding most computer code.

When you get to the algebra stage, let me recommend two tools I use with my students all the time:

First, Desmos graphing:

https://www.desmos.comI'd really encourage you to put different functions on there to really get a feel for what it means for a slope to change, a sign to change, and to get an intuitive grasp of how the math and the graph relate to each other. When I teach economics courses, there's often a gap between students who have that intuition and those who do not. What does it mean for a line to have a positive slope? What does it mean for output to increase at a decreasing rate? And so on.

Second, WolframAlpha is incredible for breaking things down and helping solve problems. You can give it an equation and ask it to "solve for x" and it'll do so (and show you the steps sometimes depending on the problem). It'll also do calculus for you.

Otherwise, as other folks have said before, fractions, fractions, fractions! Know what it means to work with them - especially division and multiplication. Also, when you get to them, the reason times tables are so important is because of the role of exponents (or "powers"). What does it mean to square x? What does it mean to raise x to the third power? What does it mean to raise x to the power minus 1?

I mentioned the above after seeing where my students often struggle (though I realize it's more algebra than pre-algebra).

Most of all, good luck! Also, as other folks recommended, try to find someone else who can help you one on one. It does wonders. Also, do mountains of problems and testing. Nothing substitutes for doing many, many, many problems.

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